Purple Sweet Potato Bread Crostini with Pea Pesto

A stunning purple sweet potato bread crostini turned into elegant appetizer with bright pea pesto, bacon or parmesan crisps, and edible flowers.

Garden Inspired Purple Sweet Potato Bread Crosini

There is a certain kind of beauty that doesn’t ask for attention, it simply exists, quietly radiant.

A purple sweet potato, when cut open, reveals a color so unexpected it almost feels imagined. Not loud, not artificial, but deep and earthy, like twilight settling into the garden. It’s the kind of ingredient that invites you to slow down, to create something that feels more like composition than cooking.

This Purple Sweet Potato Bread Crostini Began There, With Color.

Baked into a soft loaf, sliced into gentle rounds, and transformed into crostini, it becomes a canvas. A bright green sweep of pea pesto, a crisp shard of bacon, a small edible flower resting lightly on top, it is simple, and yet it feels like something more.

Not everything needs to be rushed or practical. Some recipes exist simply because they are beautiful.

And this is one of them.

Purple Potatoes and Green Peas Inspired A Moment Of Whimsy

What would you have if you crossed Gourmet Magazine with a splash of Disney? I couldn’t help but bring these delicious garden inspired ingredients alive in a little fun animation. Hope it makes you smile!

What Makes Purple Sweet Potato Bread So Special

Purple sweet potato homemade bread is naturally vibrant, nutrient-rich, and deeply flavorful. Unlike artificially colored breads, the hue comes entirely from the potato itself, bringing subtle sweetness and moisture to the dough.

When baked, it creates:

• A soft, tender crumb perfect for slicing
• A mild, slightly sweet flavor that pairs with savory toppings
• A striking visual contrast, especially when turned into crostini

This makes it ideal for appetizers, entertaining boards, or garden-inspired gatherings.

Ingredients for Purple Sweet Potato Bread

• Purple Sweet Potato (medium, purple flesh) – The heart of the recipe. Adds natural color, moisture, and a subtle sweetness that balances savory toppings.
• Yeast – Essential for a light, airy bread. Activates with warm potato liquid to create structure.
• Sugar – Helps feed the yeast and encourages a proper rise.
• Salt – Enhances flavor and balances the sweetness of the potato.
• Flour (as needed) – Builds structure. Adjusting the amount allows you to respond to humidity and potato moisture.
• Water – Used to cook the potato and create a naturally infused liquid for the dough.
• Olive Oil – Keeps the dough soft and prevents sticking during the rise.
• Egg + Water (Egg Wash) – Creates a golden, slightly glossy crust for a beautiful finish.

For the Crostini Topping

• Pea Pesto – Bright, fresh, and slightly sweet—this contrasts beautifully with the earthy bread.
• Bacon (crispy) – Adds salt, crunch, and richness. Anchors the more delicate flavors.
• Edible flowers (violets, borage, etc.) – Optional, but transformative. Adds color, softness, and a garden-inspired finish.

Tools You’ll Need

Using the right tools ensures even texture, proper rise, and a clean presentation. 

• Saucepan – for cooking and softening the sweet potato evenly
• Blender or Food Processor – ensures a smooth puree, which is key for consistent dough texture
• Mixing Bowls – one for proofing yeast, one for rising dough
• Baking Sheet – creates a rustic loaf shape perfect for slicing into crostini
• Pastry Brush – for even egg wash application
• Serrated Bread Knife – essential for clean crostini slices without tearing

How to Make Purple Sweet Potato Bread Crostini

Step 1: Cook and Puree the Sweet Potato – Peel and chop the purple sweet potato into small chunks. Place in a saucepan with water, bring to a boil, then reduce heat and simmer until soft. Cool and puree until smooth.

Step 2: Activate the Yeast – Measure 1 1/2 cups of the potato liquid/puree mixture. Sprinkle yeast and sugar over the top and let sit for 5 minutes until foamy.

Step 3: Build the Dough – Add salt and a small amount of flour. Stir, then gradually add more flour until a soft dough forms. Knead by hand until the dough becomes smooth and no longer sticky.

Step 4: First Rise – Place dough in an oiled bowl, cover, and let rise in a warm place for about 1 hour, or until doubled in size.

Step 5: Shape the Loaf – Punch down the dough, then shape into a loaf. Place on a baking sheet.

Step 6: Second Rise and Egg Wash – Brush with egg wash and let rise again for 30 minutes while the oven preheats to 400°F.

Step 7: Bake – Bake for 18-20 minutes until the top is golden and the loaf sounds hollow when tapped.

Step 8: Assemble the Crostini – Slice the bread into ½-inch slices. Top each slice with:

• 1 tablespoon pea pesto
• A piece of crispy bacon or parmesan
• An edible flower

Arrange on a serving platter and serve immediately.

More Sweet Potato Recipes to Try

While purple sweet potatoes are used in this recipe to create a savory crostini that provides the canvas to top with a colorful pea pesto, there are other sweet potato recipes that are created to be sweet.

• Old Fashioned Cookie Crust Sweet Potato Pie – Spiced with bourbon, in a buttery rich pecan cookie-like crust with a rich sweet potato custard filling, is easy enough for novice bakers!
• Sweet Potato Crepe Cake – Paper-thin sweet potato crepes stacked with a creamy passion fruit filling for a unique cake recipe prepared in half the time of a regular cake.

More Crostini Recipes to Try

• Fresh Fig and Pecan Crostini – Pecan yeast bread crostini with fig and honey is a multi-grain and pecan flour bread topped with yogurt, fresh figs and a drizzle of honey.
• Grilled Peach Pecan Crostini with Honey, a homemade pecan crostini bread lays the foundation for grilled peaches and a balsamic honey drizzle. 
• Mediterranean Ratatouille Crostini – A bruschetta, of fresh tomatoes, eggplant, peppers and other summer’s bounty ingredients, served over rustic bread slices.

FAQ

Can I use regular sweet potatoes instead of purple?
Yes, but the color will be orange rather than deep purple. Flavor remains similar.

Why is my bread dense instead of soft?
This usually happens if too much flour is added or the dough doesn’t rise long enough.

Can I make purple sweet potato bread ahead of time?
Yes. Bake the bread 1-2 days in advance and store wrapped. Slice and assemble crostini just before serving.

What can I use instead of bacon?
Parmesan crisps or plant-based alternatives work beautifully for a vegetarian version.

Is this recipe good for entertaining?
Absolutely. These crostini are visually striking and ideal for spring gatherings, brunches, or garden parties.

Purple Sweet Potato Bread Crostini with Pea Pesto

A stunning purple sweet potato bread turned into elegant crostini with bright pea pesto, bacon or parmesan crisps, and edible flowers.

5 from 2 votes

Print Pin Rate

Course: Appetizers

Cuisine: European Fusion

Keyword: Purple Sweet Potato Bread Crostini

Prep Time: 40 minutes minutes

Cook Time: 20 minutes minutes

rising: 1 hour hour 20 minutes minutes

Total Time: 2 hours hours 20 minutes minutes

Servings: 6 people

Equipment

• Saucepan to cook the potatoes
• Food processor or blender
• Baking sheet pan
• Serrated knife

Ingredients

• Sweet Potato Bread
• 2 tsp Yeast
• 2 tsp Sugar
• 1 Purple Sweet Potato medium
• 1 1/2 cups Water
• 4 cups AP Flour or as needed
• 1 tbsp Salt
• 1 tsp Olive oil
• Egg Wash
• 1 Egg
• 1 tsp Water
• Crostini Topping
• 3/4 cup Pea Pesto homemade
• 5 Bacon strips, cooked or parmesan crisps
• Edible Flowers (optional) as needed

Instructions

• Sweet Potato Bread
• Peel and chop the purple sweet potato into small chunks. Place in a saucepan with water, bring to a boil, then reduce heat and simmer until soft. Cool and puree until smooth.
• Measure 1 1/2 cups of the potato liquid/puree mixture. Sprinkle yeast and sugar over the top and let sit for 5 minutes until foamy.
• Add salt and a small amount of flour. Stir, then gradually add more flour until a soft dough forms. Knead by hand until the dough becomes smooth and no longer sticky.
• Place dough in an oiled bowl, cover, and let rise in a warm place for about 1 hour, or until doubled in size.
• Punch down the dough, then shape into a loaf. Place on a baking sheet.

  Brush with egg wash and let rise again for 20 minutes while the oven preheats to 400°F.

  Bake for 18-20 minutes until the top is golden and the loaf sounds hollow when tapped.
• Assemble the Crostini
• Slice the bread into ½-inch slices.

  Top each slice with: 1 tablespoon pea pesto, a piece of crispy bacon or parmesan, an edible flower

  Arrange on a serving platter and serve immediately.

If you make this purple sweet potato bread crostini, I’d love to see how you bring it to life. Tag your version, share your table, or simply let me know how it felt to make something this colorful, something just a little outside the ordinary.

• Author
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Robin

I am all about the gratification of the senses, and so I have become passionate about capturing the stimuli for my senses through videography and photography. Food provides some of the most alluring subject matter to capture on film, and videography does what a still shot can not do: capture sound. When you hear something sizzling, or pouring, your taste buds and sense of smell are already engaged.

I believe the table... that place that draws people to gather, is the most powerful symbol of togetherness. All that happens before the table is set, the planning, the gathering, the preparing, are all an intricate part of the dance that create the mood of celebration to share with friends and loved ones.

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